Scaffold



Aug. 5,v 1930. c. M. GooD'Rlcl-l 1,772,142

SGAFFOLD Filed sept. 25, 1929 2 sheets-sneer 1 l (/MUNCEY M466# 500mg/CH,

Amig. 5, 1930.

C. M. GOODRICH scAFFoLb Filed Sept. 273, 1929 2 Sheets-Sheet 2 ill naooo scooooooorun sooooavwowooun Patented Aug. 5, 1930 UNITED sra'rrzs CH'AUNGEY- VMARSH; GOODRICI-I, OF WINDSOR, ONTARIO, CANADA j Application filed September 273, V1929; Serial No. 394,585.

This invention relates to scaffoldsl and, While not limited thereto, relates more particularly to suspension scali'olds for use .in Y

the erection of steel bridges, buildings and the like, and has for its object the provision of such a scaffold which may be quickly assembled, may be readily moved from place to place, and will be materially safer than the rope-sling scafolds generally used.

This scaffold may be readily suspended from the top or bottom chord of a bridge, or from anyv horizontal beam of the bridge or building structure, and, when desired, may be suspended from an inclined or curved beam.

Heretofore, in erecting steel structural work it has been customary for the steel workers or riveters to construct their own scaffolds from rope-slings and planking. These 20 rope sling scafolds had a very narrowT margin ofsafety at best, since the ropes may be insecurely tied, are readily weakened by wear, and may be burned by hot rivets..

Due to the narrow margin of safety in the rope-sling scaffolds heretofore used,iit has been necessary to frequently replace the ropes which is an item of considerable cost on a large structure. Another itemof cost resulting from the use of the rope-sling scaf- Vfolds is the time consumed by the highly paid mechanics in constructing their own j scaffolds. s

The present invention overcomes all of the above disadvantages of the rope-sling scaffold and greatly facilitates the work so as materially reduce the'cost of erection.

In the drawings:

Figure l is a side elevation vshowing the v scaffold of this invention suspended from a 40 horizontal beam or chord of a steel structure.

Figure 2 is a similar view showing the scaffold suspended from an inclined or curved beam or chord.

Figure 3 is an end elevation showing the l1.5 U-shaped end supporting members in detail.

Referring more particularly to the drawings, the numeral 2 designates ay beam'orl chord of a steel structure upon which the scaffold is supported.

The scaffold comprises a pair of substanthe steel beams being erected.V

tially inverted Usha ed su orting mem-V bersA and B. p pp The members A and B are of duplicate construction and comprise a suspension beam 3 adapted to extendv transversely'of and be 55 supportedy onl the beam 2 of the structure be- 'ing erected. The beam 3 has a' plurality of series of bolt receiving holes 45' along its length.

Al pair of rigid scaEoldf supporting legs .30 5 are' removably secured in spaced relation on the beam 3 ateach side of the beam 2 andi depend from thek beamc3. The legs 5 are provided with a series of vertically spaced holes 6, and selected ones of the holes 6 areadapt- 65 ed to be registered with selected ones ofthe Y holes 4 in the beam 3 to receive attaching bolts. By bringing selected ones of the holes 6 into registration with selected ones of the holes 4 the legs may be adjusted vertically 79 A and horizontally relative to the! beam 3.

Aplurality of platform supporting bars '7 Y are bridgedy across and removably bolted to the legs 5 in vertical spaced relation to each other. The bars 7 are'l provided witha'series 75 of horizontally spaced-bolt vholes 8 adjacent each end, and selected'ones of the-holes' 8 'are adapted 'to'.be brought l.to registerV with se lectedones ofthe holes 6 in the legs 5to rep ceive .the attaching bolts, thus providingfor -horizontal and vertical adjustment 'of the platform supporting bars. 'A y.

A plurality of planks 9 are adapted to be supported on selected ones ofthe bars 7 and bridged between the U`shapedi YVsupporting 85 members Azand B, andotherplanks "10 are adapted to be bridged acro'ssvthe planks l9 thusl formingv a platform upon which workmen may stand to'rivet or'otherwise work on 90 Ahold-down or tieebar 12 is bolted to the inner'legs 5 of each pair of legs and extends under the structural beam'. 2 and Vparallel vto the beam The bar 12vis provided with a series ofbolt' holes 13 adjacent each end and 95 selected ones ofsaidholes are adapted to be Y brought intofregistry with Vselected ones of the holes 6 in the legs '5' tomeceivethe securingbolts vand thus' adj ust the harto 'various sizesof bez ams-2. r. f 1f Vicol j B for supporting the platform planks.

Y ltime lost-by the skilled riveters, since .other-V If'desired, a suitable guard rail maybe provided to prevent-the workmen slipping from theV platform and when this is wanted 5 for holding pipe rails l5. If the pipe rails are not desired, suitable cables or chains ma be secured to the Uebolts 14.

When itis necessaryto relocate fold the railing and planks are removed, the

the lscavfl vertically and horizontally relative to ysaid beam, a plurality of platform ,supporting` bars bridged across and removably secured iny vertically spacedv relation to said legs, planking supported on said bars of said pair of Ufshaped supporting members forming a platform, and a tie-bar extending between the inner ones of said legs ofeach pair parallel with said suspension beam to prevent the tilting of said beam. Y

In. testimony whereof, I have hereunto set my hand.

Y f* oHAUNoiir MARSH GooDRioH.

`suitable U-bolts 14 are providedinthe'legs tie-bars l2 are removed, and the membersA`- to the new location kwhere the scaffold may be readily assembled. Experiencehas shown that two men can move and assemble scaifolds constructed like this invention vfor live rivetying gangs, thus making a material saving 1n Wise said'riveting gangs would have to spend considerable of. their time assembling the scaffolds for use in their work.

While I have shown and described certain specificembodiments of my invention Ido not wish to be limited thereto, since various land B are then picked up bodily and Amoved modifications may be made without departc Y' ing from the scope thereof, as defined in the x' appended'claims. Y I claim:

l. lA scalfold for use'in the erection ofsteelv bridges, buildings and the'lilze, comprising apair of .substantially invertedU-shaped. supporting members, each of said members comprising asuspension beam adapted to eX f tend transversely of and bel supported-,on a

horizontal beam of the structureV being Y erected, a pair of rigidscaold legs removvertically and horizontally relative-to said beam, and a plurality of platform supporting Y bars bridged `iacross yand removably lsecured ably securedin spaced relation adjacent each end of said beam, `said legs being adjustable f in vertically spaced-relation to'said'legs, said tally relative to, saidlegs'. 1

1bars being adjustable 4,vertically and horizoni f lf2. VA scalfold'for use `in theerectionof steel l bridges,buildings and the-like,v comprising a Vpair Aof substantially inverted"= U-shaped supporting members, each of said members comprisinga suspension beam' adapted to eX- f tend JJtransversely ofi and besupported ona horizontal c beam: A,of fthe i structure fbeing f erected," apair of rigid --s'caold legs remov-V ably secured inspaced relation? adjacent each end lof said beam, said legsfbeing adjustable A Cil 

